Siemens SIMATIC S5 Series User Manual

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Working with S5-DOS/ST
C79000-G8576-C760-03
In the MS-DOS environment, the most important system resources
are the user memory and the storage space on a hard disk or
diskette. The memory configuration and management can affect
the following:
 Which programs can be run
 How fast programs can be run
 How much data a program can work with
 How much data can be stored between one working session and
the next.
The basic configuration of the user memory is on the motherboard
of your programming device. This can be extended by a memory
expansion card. All programs must be loaded in the user memory
before they can be run.
Your PG has two different types of user memory:
 Conventional user memory
 Extended memory.
Programs running under MS-DOS normally use the PG’s
conventional memory. To allow programs to use the extended
memory, you must install a memory manager to coordinate access
to this memory.
User Memory Management

Siemens SIMATIC S5 Series Specifications

General

Series	SIMATIC S5
Manufacturer	Siemens
Category	Controller
Programming Language	STEP 5
Modular Design	Yes
Power Supply	24V DC
Communication Interfaces	RS-232, RS-485
Memory Type	EPROM, RAM
Digital Inputs/Outputs	Varies depending on module configuration
Analog Inputs/Outputs	Varies depending on module configuration
CPU Type	Varies by model
Memory	Varies by model
Operating Temperature	0°C to 60°C